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25 lines
1.0 KiB
JavaScript
25 lines
1.0 KiB
JavaScript
var $ = require('../internals/export');
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var ReflectMetadataModule = require('../internals/reflect-metadata');
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var anObject = require('../internals/an-object');
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var getPrototypeOf = require('../internals/object-get-prototype-of');
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var ordinaryHasOwnMetadata = ReflectMetadataModule.has;
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var ordinaryGetOwnMetadata = ReflectMetadataModule.get;
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var toMetadataKey = ReflectMetadataModule.toKey;
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var ordinaryGetMetadata = function (MetadataKey, O, P) {
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var hasOwn = ordinaryHasOwnMetadata(MetadataKey, O, P);
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if (hasOwn) return ordinaryGetOwnMetadata(MetadataKey, O, P);
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var parent = getPrototypeOf(O);
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return parent !== null ? ordinaryGetMetadata(MetadataKey, parent, P) : undefined;
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};
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// `Reflect.getMetadata` method
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// https://github.com/rbuckton/reflect-metadata
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$({ target: 'Reflect', stat: true }, {
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getMetadata: function getMetadata(metadataKey, target /* , targetKey */) {
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var targetKey = arguments.length < 3 ? undefined : toMetadataKey(arguments[2]);
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return ordinaryGetMetadata(metadataKey, anObject(target), targetKey);
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}
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});
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